K-2 Mathematics Resources for Parents/Guardians

Standard code and description: K.NR.1.3 and K.NR.2.1; Given a number from 1-20, identify the number that is one more or one less; Count forward to 100 by tens and ones and backward from 20 by ones.

Students will need to be able to identify a given number that is between 1 and 20, and identify the numbers that are "one more" than the given number and "one less" than the given number. Students must also be able to count forward to 100 by tens (ex. "ten, twenty, thirty" etc.). Students must also be able to start counting at the number 20, and count backward from there to get to 1. 

Standard code and description: K.NR.3.1; Describe numbers from 11 to 19 by composung (putting together) and decomposing (breaking apart) the numbers into ten ones and some more ones.

These videos cover Kindergarten standards NR.3.1.1, NR.3.1.2, NR.3.1.3, and NR.3.1.4. Students will need to be able to describe numbers from 11 to 19 by "putting together" and "taking apart" the numbers to form groups of "ten ones" and then "some more ones".